[南京青奥会期间不同气象条件下水溶性离子的分布特征]

[Distribution Characteristics of Water Soluble Ions Under Different Weather Conditions During the Youth Olympic Games in Nanjing].

作者信息

Shi Yuan-Zhe, An Jun-Lin, Wang Hong-Lei, Zou Jia-Nan, Wang Jun-Xiu

机构信息

Key Laboratory of Meteorological Disaster, Ministry of Education, Joint International Research Laboratory of Climate and Environment Change, Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China.

出版信息

Huan Jing Ke Xue. 2016 Dec 8;37(12):4475-4481. doi: 10.13227/j.hjkx.201605195.

DOI:10.13227/j.hjkx.201605195

PMID:29965285

Abstract

To study the variation characteristics of water soluble ions during youth Olympic Games, PM and water soluble ions were observed by using the beta dust instrument, Anderson 9th sampler and IC type ion chromatography analyzer from August 6 to September 4, 2014. The observations were divided into three types of weather, sunny, rainy and cloudy. The average concentrations of PM under different weather conditions were sunny > cloudy > rainy days. The concentrations of water soluble ions in PM, PM and PM were also sunny > cloudy > rainy days, and the obliterate of fine particles by precipitation process was more obvious. The spectra of Ca and Mg were bimodal. The scavenging effects of SO and NH in range of 0.65-1.1 μm were stronger. The ratio of NO/SO under different weather conditions was less than 1, and the ratio of NO/SO in rainy and cloudy days was higher than that in sunny days. The values of SOR and NOR in the three kinds of weather conditions were more than 0.1, SO and NO had different degrees of transformation, there was more secondary pollutant in the atmosphere.

摘要

为研究青年奥林匹克运动会期间水溶性离子的变化特征，于2014年8月6日至9月4日，采用β射线粉尘仪、安德森九级采样器和离子色谱分析仪对颗粒物（PM）和水溶性离子进行观测。观测分为晴天、雨天和阴天三种天气类型。不同天气条件下PM的平均浓度为晴天＞阴天＞雨天。PM、PM和PM中水溶性离子的浓度同样是晴天＞阴天＞雨天，降水过程对细颗粒物的清除作用更为明显。Ca和Mg的谱型为双峰型。在0.65 - 1.1μm范围内，SO和NH的清除作用较强。不同天气条件下NO/SO的比值均小于1，雨天和阴天的NO/SO比值高于晴天。三种天气条件下SOR和NOR的值均大于0.1，SO和NO有不同程度的转化，大气中二次污染物较多。